Processes, Compositions and Kits for Acid Mist Suppression in Electrolytic Metal Refining Processes
AssigneeW-Tech Technologies Ltd.
InventorsMarcio RIBEIRO, Peter SO, Patrick WONG
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Abstract
Processes, compositions and kits are provided for suppressing generation of acid mist in an electrowinning process. The processes include the step of adding a powder of lignosulfonate or a derivative thereof or an aqueous solution comprising lignosulfonate or a derivative thereof to an electrolytic solution of the electrowinning process in an amount sufficient to suppress generation of acid mist without formation of foam at an upper surface of the electrolytic solution. The kits include instructions for carrying out the processes.
Claims20
A process for suppressing generation of acid mist in an electrowinning process, the process comprising:
- adding a powder of a lignosulfonate or a derivative thereof or an aqueous solution comprising the lignosulfonate or the derivative thereof to an electrolytic solution of the electrowinning process in an amount sufficient to suppress generation of acid mist.
A kit for use in suppressing generation of acid mist in an electrowinning process, the kit comprising:
- a powder of lignosulfonate or a derivative thereof or an aqueous solution comprising the lignosulfonate or the derivative thereof.
A composition for suppressing generation of acid mist in an electrowinning process, the composition comprising:
- about 1.5% to about 30% (m/m) of a C2 to C6 organic acid;
- about 40% to about 60% (m/m) of a diphenyl oxide disulfonate compound;
- and
- about 5% to about 30% (m/m) of a lignosulfonate or a derivative thereof.
Dependencies are inferred from the claim text.